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Test Code DIMER D-Dimer Sensitive Quantitative, LAB2810

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements

Container/Tube:

Preferred: Full blue-top (sodium citrate) 1.8mL tube-Hemolyzed or short draw specimen in not acceptable.

Specimen Volume:100 µL of sodium citrate plasma 
Stability:Centrifuged specimens at 18-24° C must be tested within 4 hours of specimen collection.

Collection Instructions: Centrifuge immediately after draw. Forward promptly. If there is a delay in transport of >4 hours or if mailing time exceeds 4 hours, spin down, remove plasma from cells and freeze immediately in plastic vial. Send specimen frozen. Specimen stability is 1 month when frozen at ≤-18° C.

NOTE: Patient should not be on heparin or Coumadin.

NOTE:  Patients with a hematocrit of >55% must be recollected using an altered amount of sodium citrate.

Reference Values

0.17-0.49 mg/L

Values below 0.50 mg/L indicate that deep vein thrombosis (DVT) or pulmonary embolism (PE) is highly unlikely.

Useful For

The D-Dimer assay aids in the diagnosis of thromboembolic events.  Elevated concentrations of D-Dimer are indicative of the presence of a clot and are found in clinical conditions such as deep venous thrombosis (DVT), pulmonary embolism (PE), and disseminated intravascular coagulation (DIC).  D-Dimer levels rise during pregnancy and high levels are associated with complications.

Day(s) Test Set Up

Monday through Sunday

Methodology

Latex Enhanced Turbidimetry

Test Classification and CPT Coding

85378